Specials are repeated also in Season 1

[Dan64 30]

Sometime happen that the Specials are also repeated in the Season 1, as in the following screenshot, where the Specials n.3 and n.4 are repeated in the Season 1:

 

[Starkadius 219]

"Display specials within season they aired in" is a feature that is enabled by default and it allows the episodes from Specials to appear in the correct order as you watch from Season 1 and on.

 

If you do not want this enabled look here